CN102865548A - LED lens for operation shadowless lamp - Google Patents
LED lens for operation shadowless lamp Download PDFInfo
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- CN102865548A CN102865548A CN2012103135317A CN201210313531A CN102865548A CN 102865548 A CN102865548 A CN 102865548A CN 2012103135317 A CN2012103135317 A CN 2012103135317A CN 201210313531 A CN201210313531 A CN 201210313531A CN 102865548 A CN102865548 A CN 102865548A
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- shadowless lamp
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Abstract
The invention discloses a lens for an LED operation shadowless lamp. The lens is in a rotary symmetrical body, and on each rotary cross section, the incoming cross section of the lens is formed by connecting a first refraction ray and a second refraction ray, and an emergent cross section of the lens is formed by connecting a fourth refraction ray and a fifth refraction ray, wherein all emergent light on the first refraction ray is refracted only through the fifth refraction ray, emergent light on the second refraction ray is reflected through a third total reflection ray firstly, and then all reflection light is refracted out through the fourth refraction ray; one end of the third total reflection ray is connected with the fourth refraction ray, while the other end of the third total reflection ray is connected with the second refraction ray through a non-pass light. According to the lens, the requirements on irradiation light spots and illumination distribution during the use of the operation shadowless lamp can be met, and the light utilization ration is high so as to meet the requirements of various types of LED light sources.
Description
Technical field
The present invention relates to a kind of medical operation shadowless lamp, more particularly, relate to the lens that a kind of LED operation shadowless lamp is used.
Background technology
Shadowless lamp is the indispensable visual plant of surgical site that throws light on.Operating lamp generally all adopts ring type energy saving lamp or Halogen lamp LED at present, but the development along with the LED technology, the particularly development of high-brightness white-light LED, the LED shadowless lamp has thoroughly solved the birth defect of ring type energy saving lamp or Halogen lamp LED self existence, is the upgraded product of ring type energy saving lamp or Halogen lamp LED.
Operation shadowless lamp requires and can observe operative site with optimum depth and angle, but, because the characteristics of luminescence of LED itself, the light that only uses LED itself to send is what can't satisfy in the operation for the requirement of irradiation hot spot, therefore, must outside led light source, dispose secondary optical lens, come the light that LED sends is redistributed and guided, to reach the requirement of use.
Summary of the invention
The present invention provides a kind of LED operation shadowless lamp lens for solving the problems of the technologies described above, can reach operation shadowless lamp in using to irradiation hot spot and Illumination Distribution requirement, and light utilization is high, satisfies various types of led light sources.
For achieving the above object, the technical solution used in the present invention is as follows:
LED operation shadowless lamp lens, described lens are rotationally symmetric body, comprise a lens installation bottom surface, at described lens the bottom surface being installed is provided with for LED installation pit in the inner, the inner surface of this pit consists of the plane of incidence of lens, also comprise the outer surface that forms the beam projecting face, it is characterized in that, on arbitrary spin crossover of lens, the incoming cross-section of lens is to be joined by first fold ray and the second fringence to forming, and the outgoing cross section of lens is to be joined by fourth reflect line and the 5th fringence to forming; Wherein the whole emergent raies on the first fold ray only reflect through the 5th fringence, and the emergent ray on the second fringence is first through the 3rd total reflection line reflection, and all reflection ray reflects through the fourth reflect line again; The 3rd end that is all-trans ray is connected with the fourth reflect line, and the 3rd other end that is all-trans ray is connected with the second fringence by a non-logical light; The non-logical light face at described non-logical light place is positioned at the plane that described lens are installed the place, bottom surface, and described the second fringence intersects described the 5th fringence and optical axis intersection bottom installing.
On the spin crossover of described lens, it is large with the distance of optical axis than other point on the second fringence with the distance of optical axis that described the second fringence is positioned at the described point of installing on the bottom, the least than other point and the distance of optical axis on the second fringence away from the distance of the point bottom the described installation and optical axis on described the second fringence.
On described spin crossover, the described the 3rd is all-trans on the ray near the reflection ray of the point of the optical axis tie point through fourth reflect line and the 5th fringence, and the angle α 〉=2arcsin (1/n) between this incident ray and the reflection ray, wherein n is the refractive index of lens.
Be all-trans ray, fourth reflect line and the 5th fringence of described first fold ray, the 3rd is respectively level and smooth curve, and described the second fringence is straight line.
With respect to the bottom surface is installed, described first fold ray is the convex arc line, and described fourth reflect line is the concave arc line, and described the 5th fringence is the convex arc line.
Described obstructed light face is frosted type surface.
It is 1.3 that described lens adopt refractive index
~4.2 between transparent material.
Technical solution of the present invention, adopt plane of refraction and fully reflecting surface to combine, and different planes of refraction is assigned with the light of different LED light emitting anger scope emission, satisfies spot size that shadowless lamp shines on face to be illuminated and the specific (special) requirements of shape and Illumination Distribution.First fold ray and optical axis intersection, the second fringence intersects bottom installing, namely cross on the cross section of optical axis at lens, the light that light source is sent in 180 degree scopes all can utilize, therefore be applicable to the led light source of any type and brand, can not cause the waste of light, light utilization is very high.Convenient in order to make lens when making, pull out film, on the spin crossover of lens, the point that the second fringence is positioned at install on the bottom is large with the distance of optical axis than other point on the second fringence with the distance of optical axis, and is the least than other point and the distance of optical axis on the second fringence away from the distance of the point bottom the installation and optical axis on the second fringence.And for the 3rd all incident raies that are all-trans on the ray are all reflected, the 3rd is all-trans on the ray near the reflection ray of the point of the optical axis tie point through fourth reflect line and the 5th fringence, and the angle α 〉=2arcsin (1/n) between this incident ray and the reflection ray, wherein n is the refractive index of lens.
Description of drawings
Fig. 1 is the structural representation of the disclosed lens of the present invention;
Fig. 2 is a spin crossover of lens shown in Figure 1;
Fig. 3 is that spin crossover glazed thread shown in Figure 2 moves towards schematic diagram;
Fig. 4 is the cross section that lens shown in Figure 1 are crossed optical axis.
The specific embodiment
Below by the drawings and specific embodiments method for designing provided by the present invention is done a detailed description:
Fig. 1～shown in Figure 4, the lens that LED operation shadowless lamp disclosed in this invention is used are rotationally symmetric body.These lens comprise that is installed a bottom surface, are provided with for LED installation pit 10 in the inner in the installation bottom surface, and the inner surface of this pit 10 consists of the plane of incidence of lens.As shown in Figure 2, on arbitrary spin crossover of lens, the incoming cross-section of lens is to be joined by first fold ray 1 and the second fringence 2 to forming.The outgoing cross section of lens is to be joined by fourth reflect line 4 and the 5th fringence 5 to forming.As shown in Figure 3, the whole emergent raies on the first fold ray 1 only reflect through the 5th fringence 5, and through the 3rd ray 3 reflections of being all-trans, all reflection rays reflect through fourth reflect line 4 more first for emergent ray on the second fringence 2.The 3rd end that is all-trans ray 3 is connected with fourth reflect line 4, and the 3rd other end that is all-trans ray is connected with the second fringence 2 by a non-logical light 6, and the non-logical light face at these non-logical light 6 places is positioned at the plane that lens are installed the place, bottom surface.The second fringence 2 intersects bottom installing, and the 5th fringence 5 intersects with optical axis L.
As shown in Figure 2, it is large with the distance of optical axis L than other point on the second fringence 2 with the distance of optical axis L that the second fringence 2 is positioned at the point of installing on the bottom, the least than other point and the distance of optical axis L on the second fringence 2 away from the distance of the point bottom the installation and optical axis L on the second fringence 2.This structure is conducive to withdrawing pattern convenience in the lens manufacturing process.Shown in Figure 3 is that light on spin crossover moves towards figure, the 3rd is all-trans the reflection ray of the some d of the most close installation bottom surface on the ray 3 through the tie point f of fourth reflect line 4 and the 5th fringence 5, and incident ray cd and the angle α between the reflection ray df at a d satisfy α 〉=2arcsin (1/n) (wherein n is the refractive index of lens), so that the 3rd all incident raies that are all-trans on the ray 3 all reflect to fourth reflect line 4.Light shown in Figure 3 moves towards figure and has illustrated all emergent raies on the first fold ray 1 only to reflect through the 5th fringence 5, through the 3rd ray 3 reflections of being all-trans, all reflection rays reflect through fourth reflect line 4 all emergent raies of the second fringence 2 more first.
Be all-trans ray 3, fourth reflect line 4 and the 5th fringence 5 of first fold ray 1, the 3rd is respectively level and smooth curve, and with respect to the bottom surface is installed, first fold ray 1 is the convex arc line, and fourth reflect line 4 is the concave arc line, and the 5th fringence 5 is the convex arc line.The second fringence 2 linearly.
For fear of sharp-pointed burr occurring in the 3rd junction of being all-trans ray 3 and fourth reflect line 4, adopt level and smooth straight line or camber line 7 that two lines are coupled together at this place, like this, when rotation formed the lens stereoscope shape, this edge just formed level and smooth curved surface.
Above-mentioned the be all-trans non-logical light face at non-logical light 6 places that ray 3 couples together of the second fringence 2 and the 3rd is made frosted type surface, to reduce it to the impact of light trend.
The above-mentioned specific embodiment just is used for explanation the present invention, can not be used for limiting protection scope of the present invention.For the distortion under the thought guidance of technical solution of the present invention and conversion, all should be attributed in the protection domain of the present invention.
Claims (7)
1.LED operation shadowless lamp lens, described lens are rotationally symmetric body, comprise a lens installation bottom surface, at described lens the bottom surface being installed is provided with for LED installation pit in the inner, the inner surface of this pit consists of the plane of incidence of lens, also comprise the outer surface that forms the beam projecting face, it is characterized in that, on arbitrary spin crossover of lens, the incoming cross-section of lens is to be joined by first fold ray and the second fringence to forming, and the outgoing cross section of lens is to be joined by fourth reflect line and the 5th fringence to forming; Wherein the whole emergent raies on the first fold ray only reflect through the 5th fringence, and the emergent ray on the second fringence is first through the 3rd total reflection line reflection, and all reflection ray reflects through the fourth reflect line again; The 3rd end that is all-trans ray is connected with the fourth reflect line, and the 3rd other end that is all-trans ray is connected with the second fringence by a non-logical light; The non-logical light face at described non-logical light place is positioned at the plane that described lens are installed the place, bottom surface, and described the second fringence intersects described the 5th fringence and optical axis intersection bottom installing.
2. LED operation shadowless lamp lens according to claim 1, it is characterized in that, on the spin crossover of described lens, it is large with the distance of optical axis than other point on the second fringence with the distance of optical axis that described the second fringence is positioned at the described point of installing on the bottom, the least than other point and the distance of optical axis on the second fringence away from the distance of the point bottom the described installation and optical axis on described the second fringence.
3. LED operation shadowless lamp lens according to claim 1, it is characterized in that, on described spin crossover, the described the 3rd is all-trans on the ray near the reflection ray of the point of the optical axis tie point through fourth reflect line and the 5th fringence, and the angle α 〉=2arcsin (1/n) between this incident ray and the reflection ray, wherein n is the refractive index of lens.
4. LED operation shadowless lamp lens according to claim 1 is characterized in that, be all-trans ray, fourth reflect line and the 5th fringence of described first fold ray, the 3rd is respectively level and smooth curve, and described the second fringence is straight line.
5. LED operation shadowless lamp lens according to claim 4 is characterized in that, with respect to the bottom surface is installed, described first fold ray is the convex arc line, and described fourth reflect line is the concave arc line, and described the 5th fringence is the convex arc line.
6. LED operation shadowless lamp lens according to claim 1 is characterized in that, described obstructed light face is frosted type surface.
7. LED operation shadowless lamp lens according to claim 1 is characterized in that, it is 1.3 that described lens adopt refractive index
~4.2 between transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103135317A CN102865548A (en) | 2012-08-30 | 2012-08-30 | LED lens for operation shadowless lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103135317A CN102865548A (en) | 2012-08-30 | 2012-08-30 | LED lens for operation shadowless lamp |
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| CN102865548A true CN102865548A (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103135317A Pending CN102865548A (en) | 2012-08-30 | 2012-08-30 | LED lens for operation shadowless lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759221A (en) * | 2014-01-06 | 2014-04-30 | 深圳市星标机电设施工程有限公司 | LED lens and lighting device |
| CN107178765A (en) * | 2017-05-25 | 2017-09-19 | 杭州有人光电技术有限公司 | A kind of total reflection lens and LED/light source system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864026A (en) * | 2003-12-10 | 2006-11-15 | 冈谷电机产业株式会社 | Indicator lamp |
| CN202791802U (en) * | 2012-08-30 | 2013-03-13 | 上海三思电子工程有限公司 | Cup-shaped lens |
-
2012
- 2012-08-30 CN CN2012103135317A patent/CN102865548A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864026A (en) * | 2003-12-10 | 2006-11-15 | 冈谷电机产业株式会社 | Indicator lamp |
| CN202791802U (en) * | 2012-08-30 | 2013-03-13 | 上海三思电子工程有限公司 | Cup-shaped lens |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759221A (en) * | 2014-01-06 | 2014-04-30 | 深圳市星标机电设施工程有限公司 | LED lens and lighting device |
| CN103759221B (en) * | 2014-01-06 | 2016-02-03 | 深圳市星标机电设施工程有限公司 | LED lens and lighting device |
| CN107178765A (en) * | 2017-05-25 | 2017-09-19 | 杭州有人光电技术有限公司 | A kind of total reflection lens and LED/light source system |
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Application publication date: 20130109 |